At his peak, Pablo Escobar's cartel was thought to have been responsible for 80 per cent of all the cocaine smuggled into the US

During the height of his powers in the 1980s, Escobar ran Colombia’s Medellin Cartel with brutal efficiency.

Some 7,000 people are thought to have died during his bloody war with the Colombian government, while he amassed as much as £30billion by importing drugs into the US, making him one of the richest men in the world at the time.

In his second book, Pablo Escobar, In Fraganti translated as Red Handed, Mr Marroquin said there was a "network of corruption" that stretched from Colombia to the US.

He highlighted how 800 kilos of cocaine were flown between Medellin and Miami International Airport each week - allegedly in collusion with US drug officials.

This resulted in more than 64 tons of cocaine being trafficked into the US between 1986 and 1989.

"There are some shocking revelations about my father and the bonds of international corruption that helped him make millions for very important organisations through drug trafficking.